The origin and evolution of silicic magmas during continental rifting: new constraints from trace elements and oxygen isotopes from Ethiopian volcanoes

William Hutchison1, Adrian Boyce2, Tamsin A Mather1, David M Pyle1, Gezahegn Yirgu3 and Matthew L. M. Gleeson4, (1)University of Oxford, Department of Earth Sciences, Oxford, United Kingdom, (2)Scottish Universities Environmental Research Center at the University of Glasgow, East Kilbride, United Kingdom, (3)Addis Ababa University, School of Earth Sciences, Addis Ababa, Ethiopia, (4)University of California Berkeley, Earth and Planetary Science, Berkeley, United States